Improvement in machinery for folding and cording the edge of paper



'form, size, and material'.

JOI-IN E. CFFIN, 0F

l Letters Patent No. 84,091,

PORTLAND, MAINE.

dated .November 17, 1868.

IMPROVEMENT IN MACHINERY FOR FOLDINGAND CORDING- THE EDG-E OI' PAPER.

The Schedule referred to in these Lette To all whom it 'may concern:

Be it known that I, JOHN E. CoFrrN, of Portland, in the county of Cumberland, and State of Maine, have invented a new and useful Machine for Folding and Gording the Edge of-Paper Goods; and I hereby declare the following to be a full, clear, and exact description thereof, which will enable others to make and use my invention, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l, Plate I, shows a side elevation of my invention.

Figure 2 is a to rack removed.

Figure I, Plate II, is an elevation of side from iig. I, Plate I.

Figure 2 is a plan of the guide-rack.

Figure 3, an end view of the rack.

Figure 4 is a transverse section of the ra the throats, with a detail of one of the th ing the slope thereof.

Plate III shows a longitudinal vertical section of a portion of the paste-roll,- with the cord and paper pass# ing through the saine, (enlarged section.)

v The purpose of my invention is to providean automatic machine for folding and coi-ding the edge of paper goods. The goods to which this machine is applicable are manufactured with .an edge of the same folded down upon itself, being provided with some adhesive substance to `retain it, and having aoord or thread enclosed within the fold.

The purpose of this machine is to fold th apply the mucilage or adhesive substance, envelop the cord within the fold.

Reference to the accompanying drawings will aid in thespecifcation of this invention.

A shows' the frame of the machine, of convenient p plan of the same, with the guidethe opposite ck, showing roats, showe edge, and run and a is a roller, to hold the paper to be corded, which paper is placed in rolls or coils upon the roller, an'd un- Wound as the process-is accomplished.

b is a guide-bar, under or over which the paper enters the machine.

c Z show two larger rolls, the upper, c, having annular projections e, and the under, al, corresponding annular' indentations or grooves, into which iit and work the projections c.

(l is set upona shaft, f, and communicates its motion to c, by the gears g h, iig. I, Plate II.

Set upon the shaft t' is the paste-rollj, revolving sothat the trucks 1, 2, 3, 4 shall take up a suficient quantity of the adhesive substance from the trough lf. This paste-roll is revolved by the gear l matching the gear y. (See iig. 1, Plate II.)

Over the paste-roll is placed the presser-roll m, revolved by the gear n., matching the gear o ou the end rs Patent and making part of the Ilma.

complete the operation, hereafter described, of folding and pressing the edge of the paper. v

These are placed one above another, like c d, and receive motion by the gear Z matching the gear lr, and also r matching s on the shaft of the upper roll p, and fu1thermore,by the gear c, pinion t,and gear u, on the other end of the shaft of the under forming-roller q.

fr is a winding-roll, to receive the goods when the process is complete, and is revolved automatically with the machine by the truck w, band x, and truck y.

z shows a guide-rack, iig. 2, Plate II, placed over the paste-roll), and under the press-roll m.

This guide-rack has apertures `5 6, and tapering throats, with convex bottoms and cuived sides; the apeitures being on the side of the rack next to the rollers c d, and the'tapering throats 78, towards the two forming-rolls p q. Up in the centre of apertures 5 6, project, for a certain distance, the trucks 1, 2, 3, 4 of the paste-roll j, so asto meet the periphery of the press-roll on.

a shows a shaft under the two rolls c d, which has free spools thereon, to contain the cord or other material'which is laid in the fold of the edge of the paper.

The operation of my inventiouiis as follows: Sufficient quantity of paste or other adhesive or mu'cilaginous substance is placed in the trough k. Cord is wound on to the proper spool or spools on the shaft af, and the pa'per to be corded is Wound or placed upon the roller a. v

The power is applied at and motion imparted to the shaft f, where a crank is shown in the drawing. Sufficient cord is first wound from its spool or spools on the shaft a', to pass up through the apertures 5 6 of the guide-rack, over the paste-roll;` in minute grooves 9 on the trucks thereof, in order to be ready for insertion into the partially-formed fold of the paper at this point. The paper is then carried from its unwindingroller a, either over or undenb, and so directed as to pass between the rolls c d, when, being taken by these rolis c d, the edges are bent at rightangles, by the prof jections and corresponding grooves on the upper and under rolls.

The width of the folded part is controlled entirely by the height of the projections and depth of the grooves on the two rolls.

Passing between these rolls, the 'paper next 'enters the apertures 5 6 of the guide-rack, and passes over the paste-roll j, where that part of the paper .upon which the folded part is to rest, receives its supply of' 'adhesive substance from 'the trucks I, 2, .85ct The folded or turned edge of the paper laps down over the edge of these trucks, and 'consequently over the cord in the groove on the trucks, as seen in Plate III. At this point the paper and cord'are carried bythe revolution of the paste-roll and its trucks into the throats 7 8.

These throats are made tapering, as seen at b', fig.

of the shaft of the paste-rollj.

p q show two forming-rolls, similar to c d, and whichY 4, Plate II. The folded or bent edge of the paper, to-

gether with th'e cord, enters these throats, and as it is carried up into the same, the fold of the paper gradually laps over upon that part which has received the paste, at the same time enclosing the cord, which, with the paper, has entered the throats from the pastewheel j.

Emerging from the narrow or thin end of the throats, the paper with its cords passes between the rolls 11 q, whose pressure completes the process, pressing the folded edge down closely over the cord, and upon the paper, after which the finished article is wound up on roll c.

p and 'q may be made smooth, if desired, as their i function is simply to press the folded paper.

Thus the paper is carried through the machine by the revolution of the rolls, and the different operations performed as described.

The cord may be carried entirely through the machine to the winding-.rod fr, if desired, before the paper is started, but if carried no further than the trucks of the paste-roll, thepaper-with its adhesive coating would then carry the'cord with it.

The formation of the edge is controlled by the construction of the proj ections and grooves on the rolls c (l.

What I claim as. my invention, and desire to secure by Letteis Patent, is-

1 The creasing-rolls c d, chutes b b of guards z, pasting-disks 1, 2, 3, grooved as shown, pressing-roll m, and finishing-rolls p q, all arranged and combined substantially as and for the purposes set forth.

2. The pasting-disks 1, 2, 3, provided with grooved edges to'receive the cord c', substantially as shown. JOHN E, COFFIN.

Witnesses:

WM. FRANK SEAVEY, HENRY C. HOUSTON. 

